package com.pkk.blny.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * @author : RYAN0UP
 * @date : 2018/12/5
 */
@Component
public class SpringUtil implements ApplicationContextAware {

  private static ApplicationContext applicationContext;

  /**
   * 获取applicationContext
   *
   * @return ApplicationContext
   */
  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    if (SpringUtil.applicationContext == null) {
      SpringUtil.applicationContext = applicationContext;
    }
  }

  /**
   * 通过name获取 Bean.
   *
   * @param name name
   * @return Object
   */
  public static Object getBean(String name) {
    return getApplicationContext().getBean(name);
  }

  /**
   * 通过class获取Bean
   *
   * @param clazz clazz
   * @param <T> <T>
   * @return T
   */
  public static <T> T getBean(Class<T> clazz) {
    return getApplicationContext().getBean(clazz);
  }
}
